Influence of salinity and humic substances on the uptake of trace metals by the marine macroalga, Ulva lactuca: Experimental observations and modelling using WHAM

Turner, Andrew; Pedroso, Silvia S.; Brown, Murray T.

doi:10.1016/j.marchem.2008.04.003

Cited by 42 publications

(17 citation statements)

References 32 publications

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“…In the latter state, Ag is able to combine with intracellular proteins and enzymes and elicit a toxic response. In the present experiments, we were not able to discriminate surface bound and internalised Ag by conventional EDTA washing (Hassler et al 2004;Turner et al 2008) because the acid has a rather low affinity for Ag ions. Nevertheless, the shape of the accumulation isotherm suggests that concentrations in the two compartments are non-linearly related and/or that at least one compartment approaches saturation.…”

Section: Discussioncontrasting

confidence: 57%

Interactions of silver nanoparticles with the marine macroalga, Ulva lactuca

2011

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The marine macroalga, Ulva lactuca, has been exposed for 48 h to different concentrations of Ag added as either silver nanoparticles (AgNP) or aqueous metal (AgNO(3)) and the resulting toxicity, estimated from reductions in quenching of chlorophyll-a fluorescence, and accumulation of Ag measured. Aqueous Ag was toxic at available concentrations as low as about 2.5 μg l(-1) and exhibited considerable accumulation that could be defined by the Langmuir equation. AgNP were not phytotoxic to the macroalga at available Ag concentrations up to at least 15 μg l(-1) and metal measured in U. lactuca was attributed to a physical association of nanoparticles at the algal surface. At higher AgNP concentrations, a dose-response relationship was observed that was similar to that for aqueous Ag recorded at much lower concentrations. These findings suggest that AgNP are only indirectly toxic to marine algae through the dissolution of Ag(+) ions into bulk sea water, albeit at concentrations orders of magnitude greater than those predicted in the environment.

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Section: Discussioncontrasting

confidence: 57%

Interactions of silver nanoparticles with the marine macroalga, Ulva lactuca

2011

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“…Previous reports have indicated that extracellular polymeric substances in culture media may cause microalgae aggregation [31][32][33]. In addition, humic acid and fulvic acid substances in culture media could complex with trace metals and affect their bioavailability [34][35][36][37]. In this study, the total organic carbon concentration in the culture media increased with the number of media recycling experiments.…”

Section: Reduced Inhibition Of the Growth And Lipid Accumulation Of Nmentioning

confidence: 50%

Recycling Nannochloropsis oceanica culture media and growth inhibitors characterization

Zhang

Wang

et al. 2016

Algal Research

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“…As previously reported ) the metal concentrations in seawater depend on many conditions such as physicochemical parameters, sampling conditions, salinity, humic substances, etc. ; and this is why they have to be carefully interpreted (Turner et al 2008;Güell et al 2008).…”

Section: Discussionmentioning

confidence: 99%

“…Duplicates were taken in each site (Süren et al 2007;Güell et al 2008). Salinity measurements were performed as changes in the ionic strength could affect elemental speciation (Turner et al 2008; Filtration was performed in the laboratory where water samples were passed through an acid pre-cleaned membrane filter of 0.45 lm. Afterwards, they were acidified and stored at 4°C for soluble metals determination.…”

Section: Collection Of Water Samples and Heavy Metals Determinationmentioning

confidence: 99%

Baseline trace metals in bivalve molluscs from the Beagle Channel, Patagonia (Argentina)

et al. 2011

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In order to test the aptitude of individuals of Mytilus chilensis as biomonitors of heavy metals pollution in seawater, several samples of this mollusk together with surrounding seawater samples were collected along 170 km of the coastal area of the Beagle Channel (Tierra del Fuego, Argentina) in 2005 and 2007. The study, performed in seven locations strategically selected, involved the determination of Cd, Cr, Cu, Ni, Pb and Zn in seawaters and mollusks by atomic absorption spectrometry (AAS) and the calculation of the respective concentration factors (CFs). Obtained data were standardized and analyzed by multivariate techniques in order to establish differences between sampling sites and periods. Obtained results will be shown and the bioaccumulation ability of M. chilensis will be evaluated by comparison with results obtained for Mytilus species in different geographical marine areas. A fully discussion on the possibility of employing the results as background levels for comparative purposes in other marine waters of the world will be provided. The possible harm derived from human consumption of these mollusks will be also assessed.

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Influence of salinity and humic substances on the uptake of trace metals by the marine macroalga, Ulva lactuca: Experimental observations and modelling using WHAM

Cited by 42 publications

References 32 publications

Interactions of silver nanoparticles with the marine macroalga, Ulva lactuca

Interactions of silver nanoparticles with the marine macroalga, Ulva lactuca

Recycling Nannochloropsis oceanica culture media and growth inhibitors characterization

Baseline trace metals in bivalve molluscs from the Beagle Channel, Patagonia (Argentina)

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